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ElenaW [278]
3 years ago
13

Which of the following is true concerning the anatomy of a skeletal muscle fiber?

Biology
1 answer:
Vesna [10]3 years ago
8 0

The correct answer is: A. Myofibrils contain thick and thin filaments.

Skeletal muscle cells are called muscle fibers because of their long and cylindrical shape. The plasma membrane of muscle fibers is sarcolemma, the cytoplasm is sarcoplasm, and the smooth endoplasmic reticulum sarcoplasmic reticulum (SR) Sarcoplasmic reticulum is specialized becaused it is involved in the process of contraction, so it stores, releases, and retrieves calcium ions.  

The functional unit of a skeletal muscle fiber is the sarcomere which consists of highly organized contractile myofilaments actin that are thin filaments and myosin (thick filaments), together with other support proteins.  

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Natali5045456 [20]

Answer:

Reverse Osmosis.

Explanation:

This is the mechanisms of water purification for drinking water which is droven by the chenical potential of the solvent .

It involves the use of partiaiy permeable membrane to allow ions , water molecules ,solvent molecules to pass through during purification

A pertial permiable menenrane in this prurifiction process is the membrane that allow only water molecules, ions and restricted other unwanted chemical contaminants from passing through it.

5 0
3 years ago
Can you please help me with this?
ruslelena [56]
The aquifer must be permeable and porous to allow the water to flow through.
5 0
2 years ago
PLS ANSWER QUICK What do you think would happen to each species if the water became too cloudy for sunlight to penetrate?
Vaselesa [24]

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Explanation:

3 0
3 years ago
Give the definition of parasympathetic nervous system?
SashulF [63]

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This nervous system will lower any fight or flight response actions such as the release of epinephrine into the blood and enable digestion, urination and defeacation. When engaged in digestion you feel relaxed and at rest, this is solely due to the parasympathetic nevous system.

6 0
3 years ago
I need help with this question
Savatey [412]
Anaphase
explanation
searching it up would’ve been easier smh
3 0
3 years ago
Read 2 more answers
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